surgical mask 3m | 美容＆化妝品 | Carousell Hong Kong
3M Nexcare Surgical Mask (4 Layers of Filtration) HK$10. The price above is for 1 (one) pack. 1 (one) pack consists of 3 (three) masks. The mask has 4-layer Filter that includes an activated carbon layer besides the inner layer, filter layer and an outer layer of the mask with 95% efficiency in terms of filtration.